BDNF stands for brain derived neurotrophic factor. This molecule, found in the brain's fear hub could have a significant impact on the study of anxiety disorders including Post Traumatic Stress Disorder. Dr. Francis Lee of Weill-Cornell Medical College is a leading BDNF investigator and was a recent guest lecturer at the National Institute of Mental Health.

Dr. Joel Sherrill, head of the Child and Adolescent Psychosocial Intervention Research Program at the National Institute of Mental Health, talks about the various anxiety disorders that can affect children.